GB818731A - Improvements in synchronous motors - Google Patents

Improvements in synchronous motors

Info

Publication number
GB818731A
GB818731A GB442057A GB442057A GB818731A GB 818731 A GB818731 A GB 818731A GB 442057 A GB442057 A GB 442057A GB 442057 A GB442057 A GB 442057A GB 818731 A GB818731 A GB 818731A
Authority
GB
United Kingdom
Prior art keywords
polepieces
unshaded
shaded
plates
polepiece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB442057A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CONS ELECTRONICS IND
Original Assignee
CONS ELECTRONICS IND
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US1166984XA priority Critical
Application filed by CONS ELECTRONICS IND filed Critical CONS ELECTRONICS IND
Priority to US798199A priority patent/US3014141A/en
Publication of GB818731A publication Critical patent/GB818731A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/145Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having an annular armature coil
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2201/00Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/12Transversal flux machines

Abstract

818,731. Synchronous motors. CONSOLIDATED ELECTRONICS INDUSTRIES CORPORATION. Feb. 8, 1957, No. 4420/57. Class 35. In a synchronous motor with unequal numbers of shaded and unshaded polepieces, a group of shaded polepieces lies between groups of unshaded polepieces, there being at least two groups of each arranged in annular formation. Fig. 4 is a development of the polepiece arrangement about the internal periphery of the stator winding which is a bobbin type coil between flat rings 3, 5 carrying unshaded polepieces of opposite polarity 22, 23. A flat shading ring intervenes between plates 3, 5 and outer plates 7, 11 carrying the shaded polepieces 24, 25 which are twice as numerous as the unshaded polepieces. A cylindrical flange integral with plate 11 extends across the plate 7 to complete the magnetic circuit and form a stator enclosure. One shaded polepiece 25<SP>1</SP> of each polarity may completely bridge plates 7, 11. Two aligned grooves in the periphery of all the plates facilitate assembly and correct spacing of the various polepieces. The permanent magnet rotor may be as shown in Fig. 3 and be coaxially within the polepieces and winding. U.S.A. Specification 2,437,142 is referred to.
GB442057A 1956-03-15 1957-02-08 Improvements in synchronous motors Expired GB818731A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US1166984XA true 1956-03-15 1956-03-15
US798199A US3014141A (en) 1956-03-15 1959-03-09 Synchronous motor and rotor

Publications (1)

Publication Number Publication Date
GB818731A true GB818731A (en) 1959-08-19

Family

ID=37024187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB442057A Expired GB818731A (en) 1956-03-15 1957-02-08 Improvements in synchronous motors

Country Status (6)

Country Link
US (1) US3014141A (en)
BE (1) BE555343A (en)
CH (1) CH347889A (en)
FR (2) FR1166984A (en)
GB (1) GB818731A (en)
NL (1) NL101279C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213327B (en) * 1987-12-30 1992-11-18 Tri Tech Stepper motor
GB2374207A (en) * 2001-04-05 2002-10-09 Sunonwealth Electr Mach Ind Co Stator assembly structure of a direct current brushless motor

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206077B (en) * 1960-03-09 1965-12-02 Cons Electronics Ind Synchronous motor with a predetermined start-up direction
US3119941A (en) * 1959-04-09 1964-01-28 Berex Establishment Step by step motor
US3149256A (en) * 1960-12-20 1964-09-15 Kohlhagen Walter Self-starting rotors for synchronous reaction motors
US3234418A (en) * 1962-06-22 1966-02-08 Walter E Heller & Company Inc Synchronous motor
BE670889A (en) * 1964-10-15
US3454801A (en) * 1965-02-01 1969-07-08 Matsushita Electric Works Ltd Self-starting synchronous motor
US3427485A (en) * 1966-02-23 1969-02-11 Mallory & Co Inc P R Synchronous motor
US3419740A (en) * 1966-06-06 1968-12-31 Mallory & Co Inc P R Self-commutated direct current motor with permanent magnet rotor
JPS4815048B1 (en) * 1966-09-29 1973-05-11
GB1199155A (en) * 1966-10-31 1970-07-15 Plessey Co Ltd Improvements in or relating to Rotary Electric Machines
US3495113A (en) * 1967-02-21 1970-02-10 Tri Tech Electric rotating machinery having one stator pole on each pole piece
US3495111A (en) * 1967-12-04 1970-02-10 Tri Tech Small permanent magnet rotor shaded pole motor
US3504253A (en) * 1968-12-09 1970-03-31 Cons Electronics Ind Rotary stepping motor having a d-c winding and a pulsed winding
US3571640A (en) * 1969-04-25 1971-03-23 Kelsey Hayes Co Flux reversing sensor
US3495107A (en) * 1969-04-28 1970-02-10 Tri Tech Cylindrical stepper motor having a stator biasing magnet
US3790834A (en) * 1970-11-21 1974-02-05 T Tanaka Low speed synchronous motor
US3737695A (en) * 1971-09-23 1973-06-05 Mallory & Co Inc P R Shaded pole synchronous motor
US3770998A (en) * 1972-08-25 1973-11-06 Tri Tech Electric rotating machine
US3808491A (en) * 1972-11-15 1974-04-30 Philips Corp Shaded pole synchronous motor
US3859548A (en) * 1973-05-18 1975-01-07 Amf Inc Permanent magnet motor
DE2829946C2 (en) * 1978-07-05 1985-01-31 Schleicher Gmbh & Co Relais-Werke Kg, 1000 Berlin, De
JPS5523711A (en) * 1978-07-29 1980-02-20 Sony Corp Rotary electric machine
DE3277951D1 (en) * 1982-12-02 1988-02-11 Hitachi Metals Ltd Cylindrical permanent magnet and manufacturing method of it
US4866321A (en) * 1985-03-26 1989-09-12 William C. Lamb Brushless electrical machine for use as motor or generator
US4952859A (en) * 1988-11-30 1990-08-28 Canon Kabushiki Kaisha Stepping motor
IT1232426B (en) * 1989-07-28 1992-02-17 Techfab Motori Per Automazione Improvements to the tachometer generators with magnet brushless electric motor, brushless

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213327B (en) * 1987-12-30 1992-11-18 Tri Tech Stepper motor
GB2374207A (en) * 2001-04-05 2002-10-09 Sunonwealth Electr Mach Ind Co Stator assembly structure of a direct current brushless motor
GB2374207B (en) * 2001-04-05 2005-07-20 Sunonwealth Electr Mach Ind Co Stator assembly structure of a direct current brushless motor

Also Published As

Publication number Publication date
NL101279C (en)
BE555343A (en)
US3014141A (en) 1961-12-19
FR1250341A (en) 1961-01-06
CH347889A (en) 1960-07-31
FR1166984A (en) 1958-11-18

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